Abstract
Shallow Crustal Thermal Structures of Central Taiwan Foothills Region
Highlights
The thermal structure of the crust may affect geological and geophysical processes, e.g., metamorphism, changes in crustal rheology, seismogenic process, seismic attenuation and the maturity of hydrocarbons, to name a few
One particular controversy is that in Central Taiwan the heat flows from previous studies (Lee and Cheng 1986; Barr and Dahlen 1989; Hwang and Wang 1993) show an increase towards the hinterland, while most of the subduction zone accretionary prisms have decreasing heat flows towards the hinterland (e.g., Hyndman et al 1993)
The heat flow decreases, instead of increases, across the Chelungpu fault that ruptured in the 1999 ChiChi earthquake in the Western Foothills of Central Taiwan
Summary
The thermal structure of the crust may affect geological and geophysical processes, e.g., metamorphism, changes in crustal rheology, seismogenic process, seismic attenuation and the maturity of hydrocarbons, to name a few. One particular controversy is that in Central Taiwan the heat flows from previous studies (Lee and Cheng 1986; Barr and Dahlen 1989; Hwang and Wang 1993) show an increase towards the hinterland, while most of the subduction zone accretionary prisms have decreasing heat flows towards the hinterland (e.g., Hyndman et al 1993). Whether such a heat flow pattern in Taiwan is true is still unknown. The Foothills of Central Taiwan provide a unique opportunity to test these parameters and the heat flows in an independent way
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